A lamp system includes a laser source and a reflecting plate for reflecting light generated from the laser source. The laser source includes a laser diode, a light splitter for splitting light generated from the laser diode into a plurality of beams, a phosphor layer for changing color of the beams transmitted from the light splitter, and a diffusing layer for diffusing the beams transmitted from the light splitter, to thereby form a surface light source. The lamp system is configured to be used in a vehicle.